In the Safety and Efficacy first phase, subjects will be randomized in a 1:1:1 fashion to one of the three treatment groups (placebo, Cocaine HCl 4% or 10% topical solution) pre-procedure and given one application of up to 4 mL from one bottle of the assigned test product. After pre-procedure Von Frey filament testing, the blind will be broken, but only relative to placebo versus cocaine, not relative to the strength of the cocaine. The placebo subjects will then exit participation in the efficacy portion of the trial, and be followed for safety for 7 days. Treatment group subjects who do not feel pain after Von Frey testing will receive their surgery or diagnostic procedure and also be followed for safety for 7 days.